Results 31 to 40 of about 251,238 (344)

Steering performance of ultrasonic phased array sensors using acoustic fields under directivity constraint

AIP Advances, 2021
Ultrasonic phased array sensors consist of multiple elements excited by predetermined time-delayed pulses. The directivity of each element was used to propose a sound field calculation model that adds a directivity constraint for each element.
Xia Zhao, Zhaoba Wang
doaj   +1 more source

Stepped-Tube Backside Cavity Piezoelectric Ultrasound Transducer Based on Sc_0.2AI_0.8N Thin Films

Micromachines, 2023
This paper presents a novel piezoelectric micromachined ultrasonic transducer (PMUT) with theoretical simulation, fabrication, and testing. Conventional methods using a PCB or an external horn to adjust the PMUT acoustic field angle are limited by the ...
Xiaobao Li, Haochen Lyu, Ahmad Safari, Songsong Zhang   +3 more
doaj   +1 more source

Directed Binary Hierarchies and Directed Ultrametrics [PDF]

Journal of Classification, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lerman, Israël-César, C., Kuntz, Pascale   +1 more
openaire   +7 more sources

After direct manipulation---direct sonification [PDF]

ACM Transactions on Applied Perception, 1998
The effectiveness of providing multiple-stream audio to support browsing on a computer was investigated through the iterative development and evaluation of a series of sonic browser prototypes. The data set used was a database containing music.
Mikael Fernström, Caolan McNamara
openaire   +2 more sources

Highly Directive Hybrid Yagi-Uda Nanoantenna for Radition Emission Enhancement

IEEE Photonics Journal, 2016
In this paper, a novel design of Yagi–Uda nanoantenna is introduced and numerically analyzed using finite integration technique via computer simulation technology software.
AbdelRahman M. Ghanim, Mohamed Hussein, Mohamed Farhat. O. Hameed, Ashraf Yahia, Salah S. A. Obayya   +4 more
doaj   +1 more source

Parametric Study and Experimental Validation of Acoustic Leaky Wave Antenna in Spatial Localization

IEEE Access
Acoustic signals, which have been utilized for decades in the spatial localization of objects, have found applications in fields as diverse as sonar for underwater navigation, communication, and object detection.
Alejandro Fernandez-Garrido, Maria Campo-Valera, Elena Abdo-Sanchez, Ruben Pico, Antonio-Javier Garcia-Sanchez, Rafael Asorey-Cacheda   +5 more
doaj   +1 more source

Unidirectional Distributed Acoustic Reflection Transducers for Quantum Applications

, 2019
Recent significant advances in coupling superconducting qubits to acoustic wave resonators has led to demonstrations of quantum control of surface and bulk acoustic resonant modes as well Wigner tomography of quantum states in these modes. These advances
Bienfait, A., Chang, H. -S., Chou, Ming-Han, Cleland, A. N., Conner, C. R., Dumur, É., Grebel, J., Peairs, G. A., Povey, R. G., Satzinger, K. J., Zhong, Y. P.   +10 more
core   +1 more source

Directivity patterns of laser-generated sound in solids: Effects of optical and thermal parameters [PDF]

, 2014
In the present paper, directivity patterns of laser-generated sound in solids are investigated theoretically. Two main approaches to the calculation of directivity patterns of laser-generated sound are discussed for the most important case of thermo ...
Krylov, Victor V.
core   +2 more sources

A framework for auralization of boundary element method simulations including source and receiver directivity.

Journal of the Acoustical Society of America, 2019
The Boundary Element Method (BEM) is a proven numerical prediction tool for computation of room acoustic transfer functions, as are required for auralization of a virtual space.
J. Hargreaves, Luke Rendell, Y. Lam
semanticscholar   +1 more source

Sense of Direction [PDF]

Science, 1883
n ...
openaire   +3 more sources